39402985247999 has 4 divisors (see below), whose sum is σ = 41720807909664. Its totient is φ = 37085162586336.

The previous prime is 39402985247929. The next prime is 39402985248001. The reversal of 39402985247999 is 99974258920493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39402985247999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39402985247929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158911330807 + ... + 1158911330840.

It is an arithmetic number, because the mean of its divisors is an integer number (10430201977416).

Almost surely, 2^{39402985247999} is an apocalyptic number.

39402985247999 is a deficient number, since it is larger than the sum of its proper divisors (2317822661665).

39402985247999 is a wasteful number, since it uses less digits than its factorization.

39402985247999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317822661664.

The product of its (nonzero) digits is 3174474240, while the sum is 80.

The spelling of 39402985247999 in words is "thirty-nine trillion, four hundred two billion, nine hundred eighty-five million, two hundred forty-seven thousand, nine hundred ninety-nine".